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man pages section 1: User Commands     Oracle Solaris 11.1 Information Library
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Preface

Introduction

User Commands

acctcom(1)

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chgrp

- change file group ownership

Synopsis

chgrp [-fhR] group file...
chgrp -s [-fhR] groupsid file...
chgrp -R [f] [-H | -L | -P] group file...
chgrp -s -R [f] [-H | -L | -P] groupsid file...

Description

The chgrp utility will set the group ID of the file named by each file operand to the group ID specified by the group operand.

For each file operand, it will perform actions equivalent to the chown(2) function, called with the following arguments:

Unless chgrp is invoked by a process with appropriate privileges, the set-user-ID and set-group-ID bits of a regular file will be cleared upon successful completion; the set-user-ID and set-group-ID bits of other file types may be cleared.

The operating system has a configuration option _POSIX_CHOWN_RESTRICTED, to restrict ownership changes. When this option is in effect, the owner of the file may change the group of the file only to a group to which the owner belongs. Only the super-user can arbitrarily change owner IDs, whether or not this option is in effect. To set this configuration option, include the following line in /etc/system:

set rstchown = 1

To disable this option, include the following line in /etc/system:

set rstchown = 0

_POSIX_CHOWN_RESTRICTED is enabled by default. See system(4) and fpathconf(2).

Options

The following options are supported.

/usr/bin/chgrp and /usr/xpg4/bin/chgrp

-f

Force. Does not report errors.

-h

If the file is a symbolic link, this option changes the group of the symbolic link. Without this option, the group of the file referenced by the symbolic link is changed.

-H

If the file specified on the command line is a symbolic link referencing a file of type directory, this option changes the group of the directory referenced by the symbolic link and all the files in the file hierarchy below it. If a symbolic link is encountered when traversing a file hierarchy, the group of the target file is changed, but no recursion takes place.

-L

If the file is a symbolic link, this option changes the group of the file referenced by the symbolic link. If the file specified on the command line, or encountered during the traversal of the file hierarchy, is a symbolic link referencing a file of type directory, then this option changes the group of the directory referenced by the symbolic link and all files in the file hierarchy below it.

-P

If the file specified on the command line or encountered during the traversal of a file hierarchy is a symbolic link, this option changes the group of the symbolic link. This option does not follow the symbolic link to any other part of the file hierarchy.

-s

The specified group is Windows SID. This option requires a file system that supports storing SIDs, such as ZFS.

Specifying more than one of the mutually-exclusive options -H, -L, or -P is not considered an error. The last option specified determines the behavior of chgrp.

/usr/bin/chgrp

-R

Recursive. chgrp descends through the directory, and any subdirectories, setting the specified group ID as it proceeds. When a symbolic link is encountered, the group of the target file is changed, unless the -h or -P option is specified. However, no recursion takes place, unless the -H or -L option is specified.

/usr/xpg4/bin/chgrp

-R

Recursive. chgrp descends through the directory, and any subdirectories, setting the specified group ID as it proceeds. When a symbolic link is encountered, the group of the target file is changed, unless the -h or -P option is specified. Unless the -H, -L, or -P option is specified, the -L option is used as the default mode.

Operands

The following operands are supported:

group

A group name from the group database or a numeric group ID. Either specifies a group ID to be given to each file named by one of the file operands. If a numeric group operand exists in the group database as a group name, the group ID number associated with that group name is used as the group ID.

file

A path name of a file whose group ID is to be modified.

Usage

See largefile(5) for the description of the behavior of chgrp when encountering files greater than or equal to 2 Gbyte (231 bytes).

Environment Variables

See environ(5) for descriptions of the following environment variables that affect the execution of chgrp: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH.

Exit Status

The following exit values are returned:

0

The utility executed successfully and all requested changes were made.

>0

An error occurred.

Files

/etc/group

group file

Attributes

See attributes(5) for descriptions of the following attributes:

/usr/bin/chgrp

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Availability
system/core-os
CSI
Enabled. See NOTES.
Interface Stability
Committed
Standard

/usr/xpg4/bin/chgrp

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Availability
system/xopen/xcu4
CSI
Enabled. See NOTES.
Interface Stability
Committed
Standard

See Also

chmod(1), chown(1), id(1M), chown(2), fpathconf(2), group(4), passwd(4), system(4), attributes(5), environ(5), largefile(5), standards(5)

Notes

chgrp is CSI-enabled except for the group name.